Means for securing automatic control of web sheets for printing presses



Aug. 18,1925. l I 1,550,242

. A. J. C;L|N E I I MEANS FOR SECURING AUTOMATIC CONTROL OF WEB SHEETS FOR PRINTING PRESSES Original FiledOct. 4. 192

I i i E. l L

T0 PRESS,

' INVENTOR BY a g ATTORNEY 7 ALLAN I. @LINE, OF @GAGO, ILLINOIS, ASSIGNO'R T0 CLINE ELECTRIC MANUPAC-.

PATENT OFFICE.

T'UJRJENG COMPANY, 0F CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

original application filed To all whom it may concern:

Be it known that I, ALLAN J. CLINE, a citizen of the United States, and a resident of the city of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Means for Securing Automatic Control of Web Sheets for Printing Presses, of which the following is a specification, reference be ing had to the accompanying drawings, forming part hereof, in which- Fig. 1 illustrates one arm of a three arm reel forming part of a roll stand for printing presses, with a roll of print paper mounted thereon, in connection with the friction device hereafter to be mentioned. Fig. 2 is a side view of my friction apparatus shown in connection with one of the rolls of multiple roll reel stand forming part of my invention. Fig. 3 illustrates one form of the apparatus for securing a variation in retarding eifect and Pig. 4 a modification thereof.

In high .speed presses, particularly those used in the printing of newspapers, it is desirable that the web of paper fed into the press shall be handled in such a manner as to minimize stoppages of the press and interruption in the feeding of the paper, dueto the breakage of the web, exhausting of a roll of paper or other causes. As is well known, the rolls of paper used with such presses each weigh about a ton and the web of paper is fed therefrom into the pressat the rate of substantially twelve-hundred feet a minute. his the present practice-to provide printing presses with roll stands or devices for holding a plurality of the large rolls of paper of the general character disclosed in my application of which this is a division, Serial No; 741,528, filed October 4, 1924. In such devices the web is taken from one roll until that roll is substantially exhausted, whereupon the supporting mechanism is rotated sufiiciently to bring a fresh roll into operating position; the web of the new roll is then pasted to the expiring web, the new web being then drawn by the press andthe old web being "severed back of the point of pasting. The stub of the expired roll is then removedla'nd a fresh roll mf sorted in its place; thus "the magazine of "rolls is always kept complete, prepared to FOR SECURING AUTOMATIC? CONTROL O'IE WEB SHEETS FOR PRINTING P RESSES.

October i, 1924, Serial ,No. 741,528. Divided and this application filed March 13, 1925, Serial No. 15,207. Renewed June 12, 1925.

furnish a continuous supply of paper to the press. With this apparatus it is the practice to make what is known as a flying pastor, which is the joining of the new web to the old web automatically without entirely stopping the press, so that the turning out of an edition is practically continuous. With my apparatus the degree of tension upon the web which the press is drawing to itself from the roll is controlled by a plurality of aprons held in frictional contact with the surface of the active roll, such aprons being connected to devices which automatically reduce the frictional contact of the aprons upon the roll as the diameter and weight of the roll diminish, together with special means controlled by the press for greatly augmenting the braking eifect when the press makes an emergency stop.

I have shown the invention inthe accompanying drawings, in which Fig. 1 shows the active roll 4 supported at 5 upon one of the arms-3 of a multiple roll reel, the web 4 from such roll being drawn off by the press. It will be observed that there is no driving mechanism for this roll, the pull of the press being depended uponas the means for withdrawing the paper from the roll and supplying it to the press. Pressing against the outer periphery of the roll I is a series of aprons 9, su ported from above the roll 4, being held by a non-rotating shaft 10, in supports 11. The lower end of the aprons are shown (more particularly in Fig. 2) as attached to a common rod or bar 13, through the springs 16, the ends of the rod 13 being pulled down by the heavier springs 14 secured to the attachment devices 15. I have found that the surfaces of commercial rolls of paper used on printing presses are so irregular that a single apron extending the entire width of one of these long roll's will preferred form of my not give satisfactory contact throughout the length of the roll, and that'mucheater eflicienoy of operation is securable y the use of a plurality of aprons as shown. It is to be.further noted that where sectional rolls are employed on a press there will always he at least one of the narrow aprons adapted to cooperate with it. It is also to be noted that when the roll of web paperis v9 will be greatest, due to the augmented distension of the springs 16 and 14, at such a time; as the web is drawn oil from the roll and the roll diminishes in diameter, the need for such a retarding effect is diminished, and this arrangement of parts adapts itself to that condition.

It will also be noticed that when a ilyiir paster is to be made by joining of the end of a fresh roll to the web of an expiring roll, without entirely stopping the press, the retation of the reel will bring another arm 3, with a fresh roll upon it, with its end properly gummed with an adhesive. in contact with the out-going web 4:, and will press such web against the aprons 9 which will serve as a backing torthe web P, and assist in starting a rotation of the fresh roll and the bringing of its gummed surfaces in contact with the out-going web so as to cause the new web to adhere to the expiring web and be drawn to press with it; after such joining of the webs the old web is cut back of the point of adhesion and the reel is rotated so as to bring it into the best operating position with reference to the aprons 9, as illustrated in Fig. 1.

Where the press is running at substantially constant speed, only a limited tension is required upon the aprons to maintain a taut condition of the active web, but when the press is suddenly stopped or made to run more slowly, the tendency is for the roll of paper to keep on unrolling at its existing speed with consequent danger of flooding the press with too much paper. i obviate this possible difliculty by automatic devices, one of which is illustrated in Fig. 3, there being a modification thereof shown in Fig. 4. In Fig. 3, the heavy springs 14: are attached to the pivoted lever arm 17, which is held in a normally operating position by the latch 20. The latch 20 is controlled by a solenoid 21, actuated when the speed of the. press is suddenly lowered, at which time the weight 19, upon the lever 17, causes the lever to be depressed, thus auto matically extending the springs 14 and 16, and imposing the necessary braking force upon the surface of the rotating roll. lPrerise electrical connections for the solenoid are not shown in,the drawings as those fa miliar withthis art know that the pushing of an emergency button on the press actuates switches for opening the main circuit to the pressdriving motor and at the same time act to bring into play some braking de vice for the press. For example, in one well known system the pressing of the emergency button actuates a solenoid which opens the main motor circuit and at the same time short circuits the armature and series field coils of such motor through an neeaaea in the modified arrangement shown in Fig. i, the latchQO, of Fig. 3, has substituted for it the plunger 23 hooked to 1 lever l7.by suitable means, as the link the plunger 23 being drawn down by the solenoid 22 actuated in time of emergency by suitable controlling switches, show 3 the drawing down of the lever 17 by solenoid 22 results in an extension of springs and 16, thus imposing the required additional strain upon the aprons 9 tending to stop further rotation the roll of paper. it do not wish to limit my to the precise form of automatic devices thus described, my invention being sufilciently broad to cover any suitable means for extending the springs 14, or i i and it or their equivalents, in time of emergency.

I claim as my invention the following:

1. A. roll stand for printing presses comprising a rotatable supporting member for a plurality of rolls of paper, means for adjusting the position of such supporting member, aprons supported from above the roll from which the web is withdrawn the press, and spring tension devices secured to such aprons and serving to hold the aprons in frictional contact with the surface of such roll with a definite pressure suitable for normal press operation and automatically increased pressure when press speed is abruptly reduced.

2. Means for applying a plurality of standards of tension tofrictional contact aprons employed with a roll stand for printing presses comprising a transverse bar to which the lower ends of all the aprons are spring connected,'and additional tension devices secured to such bar and serving to maintain continuous contact between the aprons and the roll of paper from which the web is drawn into the press, together with means adapted to'increase the pull of said tension devices when the press speed is abruptly reduced.

3. Means for applying a plurality of standards of tension to frictional contact aprons employed with a roll stand for printing presses comprising a transverse bar common to the lower ends of all the aprons, tension devices secured to such bar and serving to hold the aprons in frictional contact with the surface of the roll from which the web is withdrawn by the press with a definite pressure suitable for normal press operation, and an electric solenoid aseaaea adapted to increase the pull of the tension devices when the press speed is abruptly reduced. v l. Means for controlling ilree rotation oi? a roll of Web-paper tor a printing press comprising friction-producing aprons which are spring pressed into contact with the roll, varying-leverage devices adapted to secure a plurality of standards otspring pressure on the aprons, and means for actuating such leverage devices controlled from the press. 5 Means tor controlling the tree rotation oi. a roll of Web-paper tor a printing press comprising friction-producing aprons which are spring-pressed into contact with the roll, varyingleverage devices adapted to secure a plurality oil standards of spring pres-- sure on the aprons, and electromagnetic means for actuating such leverage devices controlled from the press.

6. Means for applying a plurality of standards of tension to frictional contact devices employed with a rollstand for printing presses, comprising a transverse tear to which all the frictional contact devices are spring connected, and additional tension devices serving to maintain continuous contact loetvveen the frictional contact devices and the roll of paper from which the Web is devices when the press speed is abruptly reduced,

'7 Means for applying a plurality ct standards oil tension to frictional contact devices employed with a roll stand for print ing presses, comprising tension devices serv ing to maintain continuous contact between the frictional contact devices and the roll of paper from Which the web is drawn to the press, together with means adapted to increase the pull of said tension devices "when the press speed is abruptly reduced.

8. Means for controlling the tree rotation of a roll of vveb paper for a printing press comprising friction-producing devices which are pressed into contact with the roll, varying-leverage devices adapted to secure a plurality of standards of pressure on the friction-producing devices and means for actuating such leverage devices controlled from the press.

9. Means for controlling the free rotation ot a roll of Web paper for a printing press comprising -friction-p-ro-ducing devices which are pressed into contact with the roll, varying-leverage devices adapted to secure a plurality of standards of pressure on the friction-producing devices, and electromagnetic means for actuating such leverage de vices controlled from thepress.

a ALLAN J, OLINE.

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